In TacScan mode for the DF-500, what are the three primary SAR frequencies scanned in addition to the manually entered tactical frequency?

• A. 121.5, 243, 406 EPIRB
• B. 121.5, 243, 406 MHz
• C. 122.5, 243, 406 EPIRB
• D. 120.0, 243, 406 EPIRB

Answer: (A)

TacScan mode is built to keep an ear on the standard search-and-rescue channels while you’re tuned to your tactical frequency. The three primary frequencies scanned in addition to the manually entered tactical frequency are 121.5 MHz, 243 MHz, and 406 MHz EPIRB. 121.5 is the international civil distress/homing frequency, 243 is the military/UHF SAR voice channel, and 406 MHz is the satellite beacon band used by Cospas-Sarsat for EPIRBs. Monitoring these channels ensures you can detect distress transmissions from various sources—ground, air, sea, or satellite—even while you’re operating on a different frequency. The other options don’t represent the standard SAR scan set used by TacScan in this mode.